FC-9821X MODEL2 NEC

描述

区别于一般计算机中的C语言编译器，嵌入式系统中的C语言编译器要专门进行优化，以提高编译效率。的嵌入式系统C编译器代码长度和执行时间仅比以汇编语言编写的同样功能程序长5~20%。编译质量的不同，是区别嵌入式C编译器工具的重要指标。而C编译器与汇编语言工具相比残余的5~20%效率差别，完全可以由现代微控制器的高速度、大存储器空间以及产品提前进入市场的优势来弥补。

新型的微控制器指令及SOC速度不断提高，存储器空间也相应加大，已经达到甚至超过了目前的通用计算机中的微处理器，为嵌入式系统工程师采用过去一直不敢问津的C++语言创造了条件。C++语言强大的类、继承等功能更便于实现复杂的程序功能。但是C++语言为了支持复杂的语法，在代码生成效率方面不免有所下降。

C/C++/EC++引入嵌入式系统，使得嵌入式开发和个人计算机、小型机等之间在开发上的差别正在逐渐消除，软件工程中的很多经验、方法乃至库函数可以移植到嵌入式系统。在嵌入式开发中采用高级语言，还使得硬件开发和软件开发可以分工，

从事嵌入式软件开发不再必须精通系统硬件和相应用汇编语言指令集。

(Q2-2)1 NKE PTA-16T UNIWIRE SYSTEM Q2-2

(Q2-2)1 MOELLER MHC032-100 Q2-2

(Q2-2)1 ALLEN BRADLEY 871TM-D5NP18-HX PROXIMITY SW

(Q2-2)1 CKD MS-40-SE2 SWITCH Q2-2

(Q2-2)1 KEYENCE FS-T22 PHOTOELECTRIC FIBER Q2-2

(5274)C Lot of 2 Allen Bradley Contact Cartridge for Re

(S2-5)6 SKINNER CC-7733-F24 COILS FOR SOLENOID VAL

(S2-5)1 MACO A-13024-101 MEMORY CARTRIDGE.S2-5.

(S2-5)1 MACO A-13024-102 MEMORY CARTRIDGE.S2-5.

(D2)1 WATTS L60608WM8 LUBRICATOR(D2)

(D6)1 SQUARE D FA-36090 CIRCUIT BREAKER(D6)

(N3-1)1 NIB CONDOR WERKE FF4-8DAH 1090400078 PRESSURE

(R2-2)1 ACTION PACK 4350B001 SIGNAL COND.R2-2.

(M6-2)1 PEPPERL&FUCHS 084012 INDUCTIVE SENSOR M6-2

(Q6-3)1 Nib RANCO V26-150 REVERSING VALVE Q6-3

(C2)1 NULINE 09248881 C2

(C2)1 NIB DATALOGIC S3-S-F5 SENSOR C2

(C2)1 NIB GARDNER DENVER 00701601 0752 VALVE KIT C2

(D1)1 NIB NUMATICS L30L-04C LUBRICATOR D1

(T2-2)1 MAC VALVES 6612A-344-PM-11?1JJ 4-WAY AIR VALVES

(T3-2)1 NORGREN SXE9673A600018J?B SOLENOID VALVE T

(T3-2)1 NIB ISSC 1214-1-G-B MOTION DETECTOR.06-10.0 S

(R2-3)1 ARMSTRONG 880 TRAP R2-3

(6614)Dueblin Rebuild Kit 3/4″NPT RH 9075-020B124 M4

(R2-2)1 ACTION PAK 7010133 SIGNAL COND.R2-2.

(R2-4)1 STACO ENERGY PRODUCTIONS 1220 VARIABLE T

(Q2-2)1 HAMMOND 1435D ENCLOSURE W/AB 800T-XA&(2)SQ

(Q2-3)1 SMC CDQ2B63-50DCM-A?73HL COMPACT CYLINDER Q

(Q2-3)1 ALLEN BRADLEY 194R-NC030P3 DISCONNECT SWITCH Q

(T2-3)1 BANNER IR2.53S OPPOSED MODE INDIVIDUAL GLASS

(O2-1)1 PHOENIX CONTACT 2281089 MODULE O2-1

(T4)2 GOULD SHAWMUT A2K400R FUSE.T4.

(D2)1 KESSLER-ELLIS KT 319 BATCH COUNTER D2

(D2)1 INDUSTRIAL DYNAMICS 6208 COUNTER MODULE D2

(D1)1 URBAN RP3-K RELAY BOARD MODULE D1

(D2)1 NIB BOSCH 0 820 023 991 SOLENOID VALVE D2

(T1)1 HONEYWELL C647A 1010 1 GAS PRESSURE SWITCH

(T1)1 TRIAD CONTROLS LT-101-2P-1 LIGHT CURTAIN T1

(T2-3)1 DAYTON 4ZK89 REGULATOR.T2-3.

(T2-4)1 INTERMATIC T-1975 TIME SWITCH.T2-4.

(R2-4)1 MYRON 532T1 DS METER.R2-4.

(O2-1)1 HELICOID H3E3F5A000000 GAUGE O2-1

(T2-5)1 ALLEN BRADLEY 164952 PROGRAMMER CONTROLLER

(R2-4)1 MAC PME-111CA-AA VALVE R2-4

(R2-4)1 ALLEN BRADLEY 500LBOD94 CONTACTOR 30AMP N

(5517)Sun-x Cable AF1CC7A for SF1 7 Meter Mfgr.Matsus

(Q2-4)1 SMC NVFR42003FZ SOLENOID VALVE Q2-4

(4471)Parker 3/8″Valve B552ABH49C 150 Psi 24 VDC(447

(G1-4)1 BALDOR GPP12542 MOTOR G1-4

(z 8-4 L14)N AMERICAN MFG HYDRAULIC AMPLIFIER REPAIR K

(X5-25)1 SQUARE D 8501 G080 RELAY X5-25

(X8-1)1 JAMESBURY CF8M BALL VALVE X8-1

(X8-1)1 BAILEY AV112100 PNEUMATIC POSITIONER X8-1

(D13)1 LUMBERG ZLU 8/L-30-624/XX DISTRIBUTION BOX

(D13)1 SMC 60-600509-003 ETHERNET NETWORK CARD D13

(E1)1 ENETROLS SALD3/4X2R SHOCK ABSORBER E1

(O2-1)1 SIEMENS 3VE1015-2GU00 MOTOR PROTECTOR O2-1

(E8)1 ALLEN BRADLEY 802PR-LBAH1 SELF-CONTAINED PR

(E8)1 NIB BALLUFF DATASENSOR BLE S3-S-F5 SENSOR E8

(E4)1 NIB NORGREN K71EA00KS6K55 SOLENOID VALVE E4

(Q6-8)1 ABB DLM911 VOLTAGE MONITOR Q6-8

(U2-4)1 LOT OF 5 NIB FPE STAB-LOK 020 20A CIRCUIT BREA

(U2-4)1 FPE NEF431015 3 POLE 15A 480 VAC 125/250